Patent US5347056A successfully refreshed from Google Patents.
US5347056A
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Process for producing unsaturated alcohols
Assignee: Mitsubishi Chemical Corp
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Filing: 1993-08-04
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Granted: 1994-09-13
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Expires: 2013-08-04
Abstract
Abstract This invention relates to a process for producing alpha , beta -unsaturated alcohol, which uses unsaturated aldehyde as a starting material, and in which only the aldehyde group in the unsaturated aldehyde is selectively hydrogenated by hydrogen transfer reaction, while the carbon-carbon double bond is left as it is. The method is characterized by using a catalyst which contains at least one oxide selected from the group consisting of oxides of yttrium, lanthanum, praseodymium, neodymium and samarium, as a main active ingredient. The catalysts exhibit high activity and selectivity, as well as a long life span.
Inventors
- 👤 Yoshihisa Watanabe
- 👤 Mitsuhiko Kurashige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:30
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/14; C12; C12C; C12C11/00; C12C11/02
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
61 words
A process for producing an unsaturated alcohol from an unsaturated aldehyde by a hydrogen transfer reaction with an alcohol, comprising the step of reacting an unsaturated aldehyde with a primary or secondary alcohol in the presence of a hydrogen transfer catalyst consisting of an oxide selected from the group consisting of oxides of Y, La, Pr, Nd, Sm and mixtures thereof.
Claim 2
Dependent Claim
61 words
A process for producing an unsaturated alcohol from an unsaturated aldehyde by a hydrogen transfer reaction with an alcohol, comprising the step of reacting an unsaturated aldehyde with a primary or secondary alcohol in the presence of a hydrogen transfer catalyst consisting of an oxide selected from the group consisting of oxides of Y, La, Pr, Nd, Sm and mixtures thereof.
Claim 3
Dependent Claim
11 words
The process of claim 1, wherein said catalyst is yttrium oxide.
Claim 4
Dependent Claim
11 words
The process of claim 1, wherein said catalyst is lanthanum oxide.
Claim 5
Dependent Claim
11 words
The process of claim 1, wherein said catalyst is praseodymium oxide.
Claim 6
Dependent Claim
11 words
The process of claim 1, wherein said catalyst is neodymium oxide.
Claim 7
Dependent Claim
11 words
The process of claim 1, wherein said catalyst is samarium oxide.
Claim 8
Dependent Claim
14 words
The process of claim 1, wherein said unsaturated aldehyde is an α, β-unsaturated aldehyde.
Claim 9
Dependent Claim
23 words
The process of claim 7, wherein said aldehyde is selected from the group consisting of acrolein, methacrolein, crotonaldehyde, methyl vinyl ketone and cinnamaldehyde.
Claim 10
Dependent Claim
16 words
The process of claim 1, wherein said process is conducted at a temperature of 100°-500° C.
Claim 11
Dependent Claim
17 words
The process of claim 1, wherein the molar ratio of said alcohol to said aldehyde is 0.1-20.
Claim 12
Dependent Claim
23 words
The process of claim 1, wherein said process is a gas phase reaction and has a flow rate of 0.01-1 hr -1 .
Claim 13
Dependent Claim
88 words
A process for producing an unsaturated alcohol from an unsaturated aldehyde by a hydrogen transfer reaction with an alcohol, comprising the step of reacting an unsaturated aldehyde with a primary or secondary alcohol in the presence of a hydrogen transfer catalyst consisting of yttrium oxide, samarium oxide or mixtures thereof as the main active ingredient and a second oxide selected from the group consisting of oxides Ca, Sr, Ba, Mn, Cr, Fe, Co, Ni, Cu, Zn, Zr, Ag, Cd, Ce, Pb, Bi, B, V, Sn and mixtures thereof.
Claim 14
Dependent Claim
88 words
A process for producing an unsaturated alcohol from an unsaturated aldehyde by a hydrogen transfer reaction with an alcohol, comprising the step of reacting an unsaturated aldehyde with a primary or secondary alcohol in the presence of a hydrogen transfer catalyst consisting of yttrium oxide, samarium oxide or mixtures thereof as the main active ingredient and a second oxide selected from the group consisting of oxides Ca, Sr, Ba, Mn, Cr, Fe, Co, Ni, Cu, Zn, Zr, Ag, Cd, Ce, Pb, Bi, B, V, Sn and mixtures thereof.
Claim 15
Dependent Claim
12 words
The process of claim 12, wherein said main ingredient is yttrium oxide.
Claim 16
Dependent Claim
12 words
The process of claim 12, wherein said main ingredient is samarium oxide.
Claim 17
Dependent Claim
18 words
The process of claim 12, wherein said main ingredient is a mixture of yttrium oxide and samarium oxide.
Claim 18
Dependent Claim
25 words
The process of claim 12, wherein said main ingredient is yttrium oxide and said second oxide is cobalt oxide, manganese oxide or a mixture thereof.
Claim 19
Dependent Claim
13 words
The process of claim 12, wherein said unsaturated aldehyde is an α,β-unsaturated aldehyde.
Claim 20
Dependent Claim
23 words
The process of claim 12, wherein said aldehyde is selected from the group consisting of acrolein, methacrolein, crotonaldehyde, methyl vinyl ketone and cinnamaldehyde.
Claim 21
Dependent Claim
16 words
The process of claim 12, wherein said process is conducted at a temperature of 100°-500° C.
Claim 22
Dependent Claim
17 words
The process of claim 12, wherein the molar ratio of said alcohol to said aldehyde is 0.1-20.
Claim 23
Dependent Claim
23 words
The process of claim 12, wherein said process is a gas phase reaction and has a flow rate of 0.01-1 hr - .
References Cited (Backward Citations)
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